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PP3V3_SUS 3.346v stable PM_SLP_S4_L 0V no pulsing at least that I can seen on my Fluke, I dont have a scope SMC_ONOFF_L 3.427v stable

PPBUS 8.57v stable PPVRTC 3.346 stable PP5V_S4RS3 0v L7520 0v L7560 3.347v

820 00165 no power, board has 2 tiny spots of liquid damage on Q7630 and U1930. Magsafe lights, 8.57v on PPBUS. PP5V_S5 is present, when I measure voltage for PP5V_S3 at L4011 and R6414 I get 0, but when I take a measurement at L4605 I get a reading that jumps all over, very strange. I have...

You nailed it JohnB, C6213 was short.

John B, resistance between 17/18 is 3.1ohm, and I get 20.4ohm between 27/28. SMC and SPI ROM look very clean U2600 looks okay how ever Y2605 does look like its been touched by some type of crap that I did not notice at first. I am about to start on a hunt for shorts.

Same mistake with PPBUS, it fluctuates from 12.59-12.45v VCORE has 0v SMC_PM_G2_EN voltage jumps all over the place Green light on charger flickers very fast have tried multiple chargers

2info, i guess I did not leave my probe on PP5V_S5 for long enough yesterday. It starts at the correct 5v then starts bouncing around after a few seconds, I also get that lightning bolt on my fluke on that particular rail. 3V3_SUS and 3V3_S5 also jump around.

820 3115, no power, mag safe stays green, no liquid damage. PP5V_SUS votage jumps all over the place. PPBUS 12.59v.

2info, I got it solved, it was a poorly soldered SPI ROM, done by some one previously. Thank you

I got it working now, this machine has an EFI swap done on it at some point in the past. The solder joints looked so/so, I pulled the chip and resoldered it. The machine boots now. Thanks John

820 3115 missing PP5V_S3, and quarter fan spin. Cant find any shorts, I replaced u2600, no change.

PLT_RESET_L 1.048v PLT_RST_BUF_L 3.345v PM_PCH_SYS_PWROK. 3.40v SYSCLK_CLK25M_SB .796v

2inform, I sm not getting USB activity, also, something I over looked PPVCORE_S0_CPU is present, PPVCORE_S0_AXG is missing.

R7402 has proper resistance, and has .337v on CPUIMVP_TON R7403 has proper resistance, and has 1.796v on CPUIMVP_UGATE1_R

JohnB I inspected R7402/3 area like you mentioned, and while I did not see any corrosion, it does look like someone has reworked this area in the past, most likey U7400 has been replaced.

No, no sound at all, dont even get a chime

820 3209, no image/no chime fan spins. PPBUS 8.39v, VCORE is present, missing LCD_IG_PWR_EN.

2informaticos, I appreciate your help unfortunately I had to return the machine to the customer. Those are the correct values 100%. Someone else suggested that the machine was probably dropped forcing the heat sink pillar into the board shorting out the trace. Thats exactly what it looked like...

Resistance to ground on L7030 is .07ohms Resistance to ground on L7530 is .09ohms Resistance between both coils is 1.2ohms

2informaticos, I dont know what you mean by 200 ohms scale? Are you asking for ohms readings on l7030 and l7530?